Question: Name the reservoir with the lowest hydraulic head whose tributary is ERROR1.
Paraphrase: Title the store with the most reduced water powered head whose tributary is ERROR1.
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q131681 . ?ent wdt:P4441 ?obj . ?ent wdt:P974 wd:Q5882177. } ORDER BY ASC(?obj)LIMIT 5